aramis erak
Legend
It's well documented in Byzantium in the 6th to 9th C CE. Bezanted is a form of studded - using coins or coin-shaped blanks.Studded Leather was never a thing as far as I can tell.
It's not common in Europe, but not unknown. Directly comparable is ring on leather and ring on quilt.
You almost never would wear any metallic armors without a gambeson or jack. That's not "combination" armor, that's just an essential part of the harness.Combination armours were a thing, like mail over gambeson (padded) or Brigandine over mail over a padded arming jacket.
Unless you like crescent shaped bruises and/or cuts. (Seen enough of them. None my own.)
Same is true for gloves and articulated gauntlets - the leather protects from the edges of the metal armor; it's not an increase in the armor's protection, it's protection from the protection.